Mr Blair, who has made millions since leaving office in 2007, told an audience in central London that Brexiteers acted with "imperfect knowledge" when they voted Leave.

Mr Duncan Smith, who was Mr Blair's direct rival during his time as Tory leader, was savage as he criticised the ex-PM for his globe-trotting consultancy work.

He told Sky News: "The idea we are going to have Tony Blair coming in, late in the day lecturing, after advising quasi-dictators around the world what to do.

"He seems to have forgotten what democracy is about.

AP•SKY NEWS

Iain Duncan Smith attacked Tony Blair over his inflammatory speech

The people voted that they want to leave it and now the job of the government is to get along and do that

Iain Duncan Smith

“Democracy is about asking people a question and then acting on it. That’s what we did and that’s what we are doing at the moment. The government and Theresa May is doing exactly the right thing.

“The idea that you just keep on asking the British people until they give you the right answer to the question, which is his case, and some of his political elite friends is no we don’t want to leave the European Union is arrogant really.”

The former Work and Pensions secretary denied that people were misinformed during the debate and said that his Government was working to deliver Brexit.

Mr Duncan Smith said: “The British people made a decision only a matter of months ago after a robust and fairly long debate, asked the question, do you want to stay or do you want to leave the European Union.”

Blair and Juncker: Together through the years
Wed, January 25, 2017

Former Prime Minister, Tony Blair and President of the European Commission, Jean-Claude Juncker have always shared a friendly relationship over the years.